CN110297788A - Transmitting line receives circuit and serial signal transmission system - Google Patents
Transmitting line receives circuit and serial signal transmission system Download PDFInfo
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- CN110297788A CN110297788A CN201910410823.4A CN201910410823A CN110297788A CN 110297788 A CN110297788 A CN 110297788A CN 201910410823 A CN201910410823 A CN 201910410823A CN 110297788 A CN110297788 A CN 110297788A
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 81
- 238000000605 extraction Methods 0.000 claims abstract description 15
- 238000012546 transfer Methods 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 230000000630 rising effect Effects 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000003321 amplification Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 24
- 238000010586 diagram Methods 0.000 description 15
- 238000004891 communication Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
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- 230000033228 biological regulation Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M9/00—Parallel/series conversion or vice versa
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0002—Serial port, e.g. RS232C
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0004—Parallel ports, e.g. centronics
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/38—Universal adapter
- G06F2213/3852—Converter between protocols
Abstract
The embodiment of the invention provides transmitting line, receive circuit and serial signal transmission system, wherein the input terminal of the transmitting line is for receiving direct current square-wave signal, and output end is for connecting transmission line；The transmitting line includes taking along circuit；Described take is used to carry out the direct current square-wave signal to generate AC signal along information extraction and export the AC signal to the transmission line along circuit；It wherein, include the direct current square-wave signal in the AC signal along information, and the direct current square-wave signal and the AC signal are serial signal.The embodiment of the present application does not use the transmission information of the high and low level in direct current square-wave signal, but the AC signal along information by including direct current square-wave signal transmits information, even if AC signal makes waveform generate variation due to signal interference, also it is difficult to have an impact to along information, to improve anti-interference ability and reduce the bit error rate.
Description
Technical field
The present embodiments relate to fields of communication technology, more particularly, to transmitting line, receive circuit and serial signal biography
Defeated system.
Background technique
As chip integration is higher and higher, more and more chips carry out interconnecting between piece by the way of serial communication,
Effectively save chip pin.So that serial signal transmission system has obtained extensive development and application.
Serial signal transmission system includes transmitting line and receives circuit, which exports serial signal to transmission
Line, the serial signal are received after transmission line by reception circuit.For example, serial transmission (English:
Serialize and deserialize, referred to as: SerDes) circuit or Low Voltage Differential Signal (English: Low Voltage
Differential Signaling, referred to as: LVDS) in circuit, parallel signal is converted into serial signal by transmitter, passes through hair
Power transmission road exports serial signal to transmission line, and for the serial signal by transmission line to receiver, receiver passes through reception
Circuit receives serial signal, and the serial signal received is reverted to parallel signal.
Wherein, it is usually direct current square-wave signal that transmitting line, which is exported to the serial signal of transmission line,.However, direct current square wave is believed
Number due to by high and low level transmit information, anti-interference ability is poor, such as due to intersymbol interference, signal cross-talk, transmission
The signal interferences such as time delay, it is easy to so that non-ideal waveform occurs in high and low level, it is higher to further result in the bit error rate.
Summary of the invention
The technical issues of embodiment of the present invention solves is to provide transmitting line, receives circuit and serial signal transfer system
System improves anti-interference ability when transmitting serial signal to realize, is further reduced the bit error rate.
For this purpose, the technical solution that the embodiment of the present invention solves technical problem is:
In a first aspect, the input terminal of the transmitting line is for receiving the embodiment of the invention provides a kind of transmitting line
Direct current square-wave signal, output end is for connecting transmission line；The transmitting line includes taking along circuit；
Described take is used to carry out the direct current square-wave signal along circuit along information extraction, and generation AC signal simultaneously will be described
AC signal is exported to the transmission line；
Wherein, in the AC signal including the direct current square-wave signal along information, and the direct current square-wave signal
It is serial signal with the AC signal.
In the first possible implementation of the first aspect, the wave crest of the AC signal corresponds to the direct current square wave
The rising edge of signal, the trough of the AC signal correspond to the failing edge of the direct current square-wave signal；Alternatively,
The wave crest of the AC signal corresponds to the failing edge of the direct current square-wave signal, and the trough of the AC signal is corresponding
The rising edge of the direct current square-wave signal.
In the second possible implementation of the first aspect, the transmitting line further includes taking with described along circuit string
The driving circuit of connection, the driving circuit are located at described take along the front end of circuit；
The driving circuit is used to carry out power amplification to the direct current square-wave signal, generates power amplified signal and by institute
It states power amplified signal and exports to described and take along circuit；
Described take carries out along the power amplified signal that circuit is used to export the driving circuit along information extraction, raw
It exports at the AC signal and by the AC signal to the transmission line.
In a third possible implementation of the first aspect, the transmitting line further includes taking with described along circuit string
The driving circuit of connection, it is described to take the front end for being located at the driving circuit along circuit；
Described take is used to carry out the direct current square-wave signal along circuit along information extraction, generates along signal and by the edge
Signal is exported to the driving circuit；
The driving circuit is used to carry out power amplification along signal along the described of circuit output to described take, and generates the friendship
Stream signal simultaneously exports the AC signal to the transmission line.
In a fourth possible implementation of the first aspect, the transmitting line further includes being located at described take along circuit
The single-ended transfer difference circuit of front end；
The signal that the single-ended transfer difference circuit is used to carry out the direct current square-wave signal single-ended-to-difference is converted, and is generated
Differential signal；
Described take is used to carry out along information extraction the differential signal of the single-ended transfer difference circuit output along circuit,
It generates the AC signal and exports the AC signal to transmission line.
In the fifth possible implementation of the first aspect, described take along circuit includes at least one capacitor or straight
Circulate alternating current circuit.
Second aspect, the embodiment of the invention provides a kind of transmitters, including parallel-to-serial converter and above-mentioned transmission electricity
Any possible implementation on road；
Wherein, it is described straight to be used to carry out parallel signal parallel-to-serial signal conversion generation for the parallel-to-serial converter
Square-wave signal is flowed, and the direct current square-wave signal is exported to the input terminal of the transmitting line；
The transmitter is in serial transmission SerDes circuit or Low Voltage Differential Signal LVDS circuit.
The third aspect, the embodiment of the invention provides a kind of reception circuit, the input terminal for receiving circuit is for connecting
Transmission line；The reception circuit includes restoring circuit；
The restoring circuit from the AC signal that the transmission line exports for detecting along information, according to described along letter
The AC signal is reverted to direct current square-wave signal by breath；
Wherein, in the AC signal including the direct current square-wave signal along information, and the direct current square-wave signal
It is serial signal with the AC signal.
In the first possible implementation of the third aspect, the wave crest of the AC signal corresponds to the direct current square wave
The rising edge of signal, the trough of the AC signal correspond to the failing edge of the direct current square-wave signal；Alternatively,
The wave crest of the AC signal corresponds to the failing edge of the direct current square-wave signal, and the trough of the AC signal is corresponding
The rising edge of the direct current square-wave signal.
In the second possible implementation of the third aspect, the restoring circuit includes concatenated amplifying circuit and lock
Deposit circuit；
The amplifying circuit is for amplifying the AC signal, generating exchange amplified signal and putting the exchange
Big signal is exported to the latch cicuit；
The latch cicuit is for latching the exchange amplified signal that the amplifying circuit exports, described in generation
Direct current square-wave signal.
In the third possible implementation of the third aspect, the restoring circuit includes comparison circuit；
The comparison circuit generates the direct current square-wave signal for being compared to the AC signal.
It in the fourth possible implementation of the third aspect, further include the common mode tune for being located at the restoring circuit front end
Whole circuit；
The level value for the AC signal that the common mode adjustment circuit is used to export the transmission line carries out whole tune
It is whole, so that level value adjusted is located at the level detection range of the restoring circuit.
It further include positioned at least the one of the restoring circuit front end in the 5th kind of possible implementation of the third aspect
A capacitance.
Fourth aspect, the embodiment of the invention provides a kind of receivers, including any possible of above-mentioned reception circuit
Implementation and serial-parallel conversion circuit；
The reception circuit is also used to export the direct current square-wave signal to the serial-parallel conversion circuit；
The serial-parallel conversion circuit is used to for the direct current square-wave signal for receiving circuit output being in series to simultaneously
Capable conversion generates parallel signal；
The receiver is in serial transmission SerDes circuit or Low Voltage Differential Signal LVDS circuit.
5th aspect, the embodiment of the invention provides a kind of serial signal transmission systems, including transmitting line and reception electricity
Road, the input terminal of the transmitting line is for receiving direct current square-wave signal, the output end of the transmitting line and reception electricity
The input terminal on road is for connecting transmission line；
The transmitting line includes taking along circuit；Described take is used to carry out along information the direct current square-wave signal along circuit
It extracts, generate AC signal and exports the AC signal to the transmission line, include the direct current in the AC signal
Square-wave signal along information；
The reception circuit includes restoring circuit；The exchange letter that the restoring circuit is used to export from the transmission line
It detects described along information in number, the AC signal is reverted into the direct current square-wave signal along information according to described；
Wherein, the direct current square-wave signal and the AC signal are serial signal.
6th aspect, the embodiment of the invention provides a kind of sending methods, any possibility for above-mentioned transmitting line
Implementation；Described sender method includes:
The transmitting line carries out the direct current square-wave signal to generate the AC signal along information extraction；
The transmitting line exports the AC signal to the transmission line
7th aspect, the embodiment of the invention provides a kind of method of reseptances, any possibility for above-mentioned reception circuit
Implementation；The method of reseptance includes:
The reception circuit is detected from the AC signal that the transmission line exports along information；
The AC signal is reverted to direct current square-wave signal along information according to described by the reception circuit.
According to the above-mentioned technical solution, the transmitting line of the embodiment of the present invention is when transmitting serial signal, no longer directly
Using direct current square-wave signal, but the direct current square-wave signal mention along information along circuit by taking in transmitting line
It takes, generates the AC signal along information including the direct current square-wave signal, and transmitted using the AC signal.It can
To see, the embodiment of the present application does not use the transmission information of the high and low level in direct current square-wave signal, but by including direct current square wave
The AC signal along information of signal transmits information, even if AC signal changes since signal interference generates waveform, also very
Difficulty has an impact to therein along information, to improve anti-interference ability, further reduces the bit error rate.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of system schematic of Serdes circuit；
Fig. 2 is a kind of schematic diagram of direct current square-wave signal；
Fig. 3 is the schematic diagram for the direct current square-wave signal of jitter phenomenon occur；
Fig. 4 is a kind of structural schematic diagram of transmitting line；
Fig. 5 is a kind of structural schematic diagram of embodiment of transmitting line 100 provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another embodiment of transmitting line 100 provided in an embodiment of the present invention；
Fig. 7 is a kind of schematic diagram of AC signal provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another embodiment of transmitting line 100 provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of another embodiment of transmitting line 100 provided in an embodiment of the present invention；
Figure 10 is a kind of structural schematic diagram of embodiment of transmitter 10 provided in an embodiment of the present invention；
Figure 11 is a kind of structural schematic diagram of the embodiment provided in an embodiment of the present invention for receiving circuit 400；
Figure 12 is the structural schematic diagram of another embodiment provided in an embodiment of the present invention for receiving circuit 400；
Figure 13 is the structural schematic diagram of another embodiment provided in an embodiment of the present invention for receiving circuit 400；
Figure 14 is a kind of structural schematic diagram of embodiment of receiver 20 provided in an embodiment of the present invention；
Figure 15 is a kind of flow diagram of embodiment of the method for sending method provided in an embodiment of the present invention；
Figure 16 is a kind of flow diagram of embodiment of the method for method of reseptance provided in an embodiment of the present invention.
Specific embodiment
As more and more chips carry out interconnecting between piece by the way of serial communication, SerDes circuit, LVDS circuit
Equal serial signal transmission systems have obtained extensive development and application.
Serial signal transmission system includes transmitting line and receives circuit, which exports serial signal to transmission
Line, the serial signal are received after transmission line by reception circuit.Such as a kind of Serdes circuit shown in FIG. 1
In, serializer (being equivalent to transmitter) includes transmitting line, and deserializer (being equivalent to receiver) includes that reception circuit and clock are extensive
Multiple (English: Clock data recovery, referred to as: CDR) circuit.Parallel signal is converted into serial signal by serializer, is passed through
The transmitting line exports serial signal to transmission line, and by transmission line to deserializer, deserializer passes through the serial signal
After receiving circuit reception serial signal, ce circuit carries out clock recovery according to the serial signal, and by the serial signal and restores
Serial signal after alignment is reverted to parallel signal by clock alignment out, deserializer.
Wherein, it is usually direct current square-wave signal that transmitting line, which is exported to the serial signal of transmission line,.Direct current square-wave signal refers to
Be the level signal being made of low level (such as 0 level) and high level (such as 1 level), such as shown in Fig. 2.It needs to illustrate
, direct current square-wave signal mentioned in the embodiment of the present application may be deformed due to interference, but substantially be still
Square-wave signal.
However, direct current square-wave signal is due to transmitting information by high and low level, anti-interference ability is poor, it is specific and
Speech, direct current square-wave signal are more sensitive to signal interferences such as intersymbol interference, signal cross-talk, propagation delay times, it is easy to so that high and low
There is non-ideal waveform in level, such as it is possible that overshoot waveform as shown in Figure 3.It is high and low when there is non-ideal waveform
Level can not be correctly detected, and cause the bit error rate higher.
In addition, non-ideal waveform can also occur due to level attenuation etc. in direct current square-wave signal, error code is also resulted in
Rate is higher.
In order to solve the problems, such as it is above-mentioned due to caused by poor anti jamming capability, level attenuation the bit error rate it is high, a kind of mode
It is that equalizing circuit is set in transmitting line.Such as shown in Fig. 4, a kind of transmitting line includes single-ended transfer difference circuit, balanced electricity
Road and driving circuit, wherein the single-ended transfer difference circuit is used to carry out serial signal shown in Fig. 2 the signal of single-ended-to-difference
Conversion, the equalizing circuit are used for the loss to transmission line and carry out isostatic compensation, which is used to drive the load of transmission line.
Although transmitting line shown in Fig. 4 slows down direct current square-wave signal poor anti jamming capability, level by equalizing circuit
The high problem of the bit error rate caused by characteristics such as decaying is especially difficult to be applicable in however, to not only result in power consumption larger for the equalizing circuit
In the mobile terminals such as power consumption requirements lower equipment, such as mobile phone, but also circuit complexity can be increased to a certain extent.
Further, since the driving circuit is directly connected to the transmission line, it is therefore desirable to which higher driving capability directly drives
The load of the transmission line, in addition, due to driving being that direct current square-wave signal also results in driving circuit and needs higher driving energy
The increase of power, driving capability will will lead to higher driving power consumption.The technical issues of embodiment of the present invention solves is to provide hair
Power transmission road receives circuit and serial signal transmission system, no longer uses direct current square-wave signal when transmitting serial signal to realize,
But the AC signal along information including direct current square-wave signal is used, not needing the higher equalizing circuit of power consumption just can be improved
Anti-interference ability avoids level attenuation, to reduce the bit error rate.In addition, driving capability of the embodiment of the present application to driving circuit
It is required with driving power consumption relatively low.
Referring to Fig. 5, the embodiment of the invention provides a kind of Installation practices of transmitting line 100.The embodiment of the present invention
In transmitting line 100 input terminal for receiving direct current square-wave signal, the output end of transmitting line 100 is for connecting transmission line
200。
In embodiments of the present invention, transmitting line 100 includes taking along circuit 101.
It takes and is used to carry out the direct current square-wave signal along circuit 101 along information extraction, generate AC signal, and by the exchange
Signal is exported to transmission line 200.Wherein, the direct current square-wave signal and the AC signal are serial signal.And the direct current side
Wave signal can be to be generated by parallel-to-serial converter, can not also be subject to by other circuit evolvings, the embodiment of the present application to this
It limits.
It takes and is referred to as being specifically used for carrying out along detection circuit (English: edge detect module) along circuit 101
Along information extraction, that is, extract the rising edge and failing edge information in direct current square-wave signal, therefore, the AC signal of generation
In include direct current square-wave signal along information.Also, the wave character of AC signal is corresponding with along information.Wherein waveform is special
Sign includes wave crest, trough etc. for embodying the feature of waveform, that is to say, that AC signal is taken by wave characters such as wave crest, troughs
With described along information, in an optional implementation manner, the wave crest of the AC signal corresponds to the direct current square-wave signal
Rising edge, the trough of the AC signal correspond to the failing edge of the direct current square-wave signal；In another optional implementation
In, the wave crest of the AC signal corresponds to the failing edge of the direct current square-wave signal, described in the trough of the AC signal is corresponding
The rising edge of direct current square-wave signal.Direct current square-wave signal shown in Fig. 2 is carried out along information extraction, energy along circuit 101 for example, taking
AC signal as shown in Figure 7 is accessed, the wave crest and trough of the AC signal in Fig. 7 respectively correspond the upper of direct current square-wave signal
Rise edge and failing edge.
In embodiments of the present invention, the transmitting line 100 can also include and take along the concatenated driving circuit of circuit 101
102.Driving circuit 102 is specifically used for carrying out power amplification, so that the AC signal for driving transmitting line 100 to export is in transmission line
Transmission on 200.Specifically, it takes along circuit 101 and driving circuit 102 for being carried out respectively along information to the direct current square-wave signal
Extraction and power amplification, generate the AC signal.
In embodiments of the present invention, taking can be as shown in fig. 6, takes edge along the positional relationship of circuit 101 and driving circuit 102
Circuit 101 is located at the front end of driving circuit 102；Specifically, it takes and along circuit 101 is used to that direct current square-wave signal mention along information
It takes, generate along signal and exports this to driving circuit 102 along signal；Driving circuit 102 be used for take along circuit 101 export
Power amplification is carried out along signal, the AC signal is generated and exports the AC signal to transmission line 200.Wherein, edge is taken
Circuit 101 is located at the front end of driving circuit 102, refers to taking the input terminal of output end and driving circuit 102 along circuit 101 straight
It connects and is connected or is indirectly connected (such as being connected by other circuits).
In Fig. 6, since driving circuit 102 is directly connected to transmission line 200, driving circuit 102 can be according to transmission line 200
On loaded self-adaptive adjust driving capability.For example, can (usually loading at this time larger) longer in transmission line 200 when, increase
The driving capability of driving circuit 102, or can also be shorter in transmission line 200 (loading smaller) to increase output distance
When, the driving capability of driving circuit 102 is reduced to reduce power consumption.
In another embodiment, the location swap along circuit 101 and driving circuit 102 can also be taken by described.Such as
Shown in Fig. 8, driving circuit 102, which is located at, to be taken along the front end of circuit 101；Specifically, driving circuit 102 is used for the direct current square wave
Signal carries out power amplification, generates power amplified signal, and the power amplified signal is exported to taking along circuit 101；It takes along electricity
The power amplified signal that road 101 is used to export driving circuit 102 carries out generating the AC signal along information extraction.
Wherein, driving circuit 102, which is located at, takes the output end for referring to driving circuit 102 along the front end of circuit 101 and takes along circuit 101
Input terminal be directly or indirectly connected (such as by other circuits be connected).
The course of work of the transmitting line 100 of the present embodiment includes:
Transmitting line 100 receives serial, direct current square-wave signal, and the direct current square-wave signal can be as shown in Fig. 2, send
Taking in circuit 100 carries out the direct current square-wave signal along circuit 101 to generate serial, AC signal along information extraction,
In, the AC signal can be as shown in fig. 7, wave crest and trough respectively correspond the rising edge and failing edge of direct current square-wave signal.
Transmitting line 100 exports the AC signal of generation to transmission line 200, and the AC signal is after the transmission of transmission line 200, Ke Yiyou
Circuit is received to be received.Reception circuit can use in the AC signal and restore the direct current square wave letter along information
Number.
Wherein, transmitting line 100 can be used in the serial signal transmission systems such as Serdes circuit, LVDS circuit.
According to the above-mentioned technical solution, the transmitting line 100 of the present embodiment is no longer directly adopted when transmitting serial signal
With direct current square-wave signal, but the direct current square-wave signal is carried out along information extraction along circuit 501 by taking, generating includes institute
The AC signal along information of direct current square-wave signal is stated, and is transmitted using the AC signal.As it can be seen that the embodiment of the present application
The high and low level transmission information in direct current square-wave signal is not used, but by including direct current square-wave signal along information
AC signal transmits information, even if AC signal makes waveform generate variation due to signal interference, it is also difficult to therein along letter
Breath has an impact, to improve anti-interference ability, further reduces the bit error rate.In addition, since exchange level information is not deposited
In high and low level, therefore the problem of there is no level attenuations, therefore the bit error rate caused by also solving due to level attenuation
High problem.
For example, when transmitting serial signal using direct current square-wave signal as shown in Figure 2, if the direct current square-wave signal
Due to signal interferences such as intersymbol interference, signal cross-talk, propagation delay times, there is overshoot waveform or other unreasonablys as shown in Figure 3
When thinking waveform, the high and low level of transmission can not be correctly detected, and cause the bit error rate higher.However, when using as shown in Figure 7
When AC signal transmits serial signal, change even if the AC signal is generated since waveform occurs in signal interference, such as wave crest
Peak value reduces, but still is able to detect wave crest and trough from the AC signal, that is to say, that transmission along information still
It can be correctly detected, so that the bit error rate is lower.
Secondly, transmitting serial signal due to using AC signal in the embodiment of the present invention, anti-interference ability is improved, no
It needs to carry out isostatic compensation using equalizing circuit in circuit to be particularly suitable for power consumption to further save power consumption and be lower than
The mobile terminals such as the equipment, such as mobile phone of certain threshold value, transmitting line and the actual measurement power consumption for receiving circuit can be lower than 12 milliwatts.
It is also more applicable for the shorter scene of transmission line distance simultaneously, for example, transmission line distance is less than 10 centimetres.
In addition, in circuit structure shown in Fig. 6, although driving circuit 102 is still to be directly connected to transmission line 200,
What is exported to transmission line 200 due to driving circuit 102 is AC signal, rather than direct current square-wave signal, and drives AC signal
Compared to driving direct current square-wave signal, the driving capability needed requires lower.And in circuit structure shown in Fig. 8, driving
Circuit 102 is not directly connected transmission line 200, without directly driving the load of transmission line 200, can further decrease pair
The requirement of the driving capability of driving circuit 102 reduces driving power consumption.
In embodiments of the present invention, the AC signal that transmitting line 100 exports is either differential signal is also possible to list
End signal.It is specifically described below.
Such as shown in Fig. 9, transmitting line 100 can also include being located to take the single-ended transfer difference circuit along 101 front end of circuit
103。
Wherein, the signal that single-ended transfer difference circuit 103 is used to carry out the direct current square-wave signal single-ended-to-difference is converted,
Generate differential signal；It takes and mention along information along the differential signal that circuit 101 is used to export single-ended transfer difference circuit 103
It takes, generate the AC signal and exports the AC signal to transmission line 200.
In addition, transmitting line 100 can not also include single-ended transfer difference circuit, institute in order to realize the purpose of saving pin
Stating AC signal and the direct current square-wave signal is single-ended signal.
The embodiment of the present invention will provide the optional implementation taken along circuit 101 and driving circuit 102 respectively below.
Optionally, taking along circuit 101 includes at least one capacitor.Such as shown in Fig. 9, single-ended transfer difference circuit 103 includes
Two output ends, taking along circuit 101 includes at least two groups capacitor, each output of every group of capacitor and single-ended transfer difference circuit 103
End is connected respectively (Fig. 9 is to be indirectly connected with).The embodiment of the present invention is to the capacitor number of every group of capacitor and is not limited, can
To be illustrated in figure 91, or multiple.
Other than capacitor, taking along circuit 501 can also be other forms along detection circuit, such as may include direct current
Deliver current circuit.
The direct current square-wave signal mentioned in the application both may include voltage signal, also may include current signal.Wherein,
If taking along circuit 501 includes capacitor or driving circuit positioned at taking along the front end of circuit 501, the direct current square-wave signal is
Voltage signal can may be current signal for voltage signal when other situations.
Optionally, driving circuit 102 includes power amplification circuit, can specifically include at least one power amplifier.Example
As shown in figure 9, single-ended transfer difference circuit 103 includes two output ends, driving circuit 102 includes at least two groups power amplifier,
Each output end of every group of power amplifier and single-ended transfer difference circuit 103 is connected respectively (Fig. 9 is to be directly connected to).This hair
Bright embodiment can be illustrated in figure 92 for the power amplifier number of every group of power amplifier and without restriction,
It can be for 1 or greater than 2.
The position between circuit 101 and driving circuit 102 is taken to can be interchanged in Fig. 9.
It should be noted that the transmitting line 100 in the embodiment of the present application both can be set to it is built-in in transmitter
Circuit, or independent outer circuits, the embodiment of the present invention is to this and is not limited.Illustrate that transmitting line is arranged below
A specific embodiment in transmitter.
Referring to Fig. 10, the embodiment of the invention provides a kind of Installation practice of transmitter 10, the transmission of the present embodiment
Device 10 includes parallel-to-serial converter 300 and transmitting line 100.
Parallel-to-serial converter 300 is used to carry out parallel signal parallel-to-serial signal conversion and generates the direct current square wave
Signal, and the direct current square-wave signal is exported to the input terminal of transmitting line 100.Transmitting line 100 is the embodiment of the present invention
Any embodiment of the transmitting line of offer.
Wherein, transmitter 10 can be used in the serial signal transmission systems such as Serdes circuit, LVDS circuit.For example, hair
Sending device 10 can be the serializer in Serdes circuit.
Corresponding above-mentioned transmitting line and transmitter, it is herein described to additionally provide the device implementation for receiving circuit and receiver
Example.It is specifically described below.
As shown in figure 11, the embodiment of the invention provides a kind of Installation practices for receiving circuit 400.The embodiment of the present invention
In reception circuit 400 input terminal for connecting transmission line 200.
In embodiments of the present invention, receiving circuit 400 includes restoring circuit.
The restoring circuit from the AC signal that transmission line 200 exports for detecting along information, according to described along letter
The AC signal is reverted to direct current square-wave signal by breath.It wherein, include the direct current square-wave signal in the AC signal
Along information, and the direct current square-wave signal and the AC signal are serial signal.Also, the AC signal can be
The signal for being generated and being exported by the transmitting line 100 in any of the above-described embodiment.
Wherein, the wave character of the AC signal is corresponding with along information.The wave character includes wave crest, trough etc.
Feature, that is to say, that AC signal is carried described along information by wave characters such as wave crest, troughs.In a kind of optional realization side
In formula, the wave crest of the AC signal corresponds to the rising edge of the direct current square-wave signal, and the trough of the AC signal corresponds to institute
State the failing edge of direct current square-wave signal；In another optional implementation, the wave crest of the AC signal corresponds to described straight
The failing edge of square-wave signal is flowed, the trough of the AC signal corresponds to the rising edge of the direct current square-wave signal.For example, described extensive
AC signal as shown in Figure 7 can be reverted to direct current square-wave signal as shown in Figure 2 by compound circuit, wherein the exchange in Fig. 7
The wave crest and trough of signal respectively correspond the rising edge and failing edge of direct current square-wave signal.
Figure 11 and Figure 12 each provides two kinds of specific structures of restoring circuit, illustrates separately below.
The restoring circuit can be as shown in figure 11, including concatenated amplifying circuit 401 and latch cicuit 402.
Wherein, amplifying circuit 401 is for amplifying the AC signal, generates exchange amplified signal and by the friendship
Stream amplified signal is exported to latch cicuit 402.Wherein, amplifying circuit 401 may include one or more amplifiers, such as voltage
Amplifier, current amplifier etc..Latch cicuit 402 is for locking the exchange amplified signal that amplifying circuit 401 exports
It deposits, generates the direct current square-wave signal.Latch cicuit 402 may include one or more latch.
The restoring circuit is also shown in Fig.12, including comparison circuit 403, and comparison circuit 403 is used for the friendship
Stream signal is compared, and generates the direct current square-wave signal.
Wherein, the AC signal can be that single-ended signal can also be with differential signal.Wherein, if the AC signal is poor
Sub-signal, the differential signal are separately input to two input terminals of amplifying circuit 401, or are separately input to comparison circuit
403 two input terminals.If the AC signal is single-ended signal, the single-ended signal is input to one of amplifying circuit 401
Input terminal, be perhaps input to comparison circuit 403 an input terminal amplifying circuit 401 or comparison circuit 403 another is defeated
Enter to hold input reference voltage or reference current.
Since the restoring circuit for including comparison circuit 403 or amplifying circuit 401 etc. has certain level detection range,
Such as 3V-5V.And AC signal may be to float up and down in 0 level, such as shown in Fig. 7, the restoring circuit cannot be direct at this time
The AC signal is detected.
To solve the above-mentioned problems, as shown in figure 13, the reception device 400 of the present embodiment can also include positioned at described extensive
The common mode adjustment circuit 405 of compound circuit front end.Common mode adjustment circuit 405 is used for the AC signal exported to transmission line 200
Level value carry out integrated regulation, such as integral raising or reduction, so that level value adjusted is located at the restoring circuit
Level detection range.Such as in Figure 13, common mode adjustment circuit 405 can carry out whole lift to the voltage value of AC signal
Height enables amplifying circuit 401 to amplify the AC signal.Amplifying circuit 401 is specially an amplifier in Figure 13.
Optionally, the reception circuit 400 in the embodiment of the present application can also include being located at the restoring circuit front end extremely
A few capacitance 404.Wherein, capacitance 404 is used to that the direct current signal for receiving circuit 400 to be avoided to be loaded into transmission line
On 200.Such as shown in Figure 13, receiving circuit includes two capacitances, and transmission line 200 shares two, every transmission lines and every
A capacitance is connected respectively.It receives circuit 400 and receives the AC signal that transmitting line 100 exports, send at this time
Circuit can be to specifically include capacitor along circuit 101 as shown in figure 9, taking.
Optionally, the reception circuit 400 in the embodiment of the present application can also include the resistance positioned at the restoring circuit front end
Anti- match circuit 406, for carrying out impedance matching.
The reception circuit 400 of the embodiment of the present application can be used for the serial signal transfers systems such as Serdes circuit, LVDS circuit
In system.
It should be noted that the reception circuit 400 in the embodiment of the present application both can be set to it is built-in in receiver
Circuit, or independent outer circuits, the embodiment of the present invention is to this and is not limited.Illustrate to receive circuit setting below
A specific embodiment in receiver.
Figure 14 is please referred to, the embodiment of the invention provides a kind of Installation practice of receiver 20, the receptions of the present embodiment
Device 20 includes receiving circuit 400 and serial-parallel conversion circuit 500.
Receiving circuit 400 is any embodiment provided by the embodiments of the present application for receiving circuit.Circuit 400 is received to be also used to
The direct current square-wave signal is exported to serial-parallel conversion circuit 500.
It is serial-to-parallel that serial-parallel conversion circuit 500 is used to receive the direct current square-wave signal progress that circuit 400 exports
Conversion, generate parallel signal.
Wherein, receiver 20 can be used in the serial signal transmission systems such as Serdes circuit, LVDS circuit.For example, connecing
Receiving device 20 can be the deserializer in Serdes circuit.
Optionally, receiver 20 further includes ce circuit, such as when receiver 20 is used for Serdes circuit.Ce circuit is located at
It receives between circuit 400 and serial-parallel conversion circuit 500, when for being carried out according to the direct current square-wave signal for receiving the output of circuit 400
Clock restores, and by the direct current square-wave signal and the clock alignment that recovers；Serial-parallel conversion circuit 500 is for exporting ce circuit
Alignment after direct current square-wave signal carry out serial-to-parallel conversion, generate parallel signal.
The embodiment of the invention also provides a kind of system embodiments of serial signal transmission system.The serial letter of the present embodiment
Number Transmission system includes transmitting line 100 and receives circuit 400, and the input terminal of transmitting line 100 is for receiving direct current square wave letter
Number, the output end of transmitting line 100 and the input terminal for receiving circuit 400 are used to connect transmission line 200.
Transmitting line 100 includes taking along circuit 101；It takes and is used to carry out along letter the direct current square-wave signal along circuit 101
Breath extracts, and generates AC signal and exports the AC signal to transmission line 200, includes the direct current in the AC signal
Square-wave signal along information.
Receiving circuit 400 includes restoring circuit；The restoring circuit is used for the AC signal exported from transmission line 200
In detect described along information, the AC signal is reverted into the direct current square-wave signal along information according to described.
Wherein, the direct current square-wave signal and the AC signal are serial signal.
Wherein, transmitting line 100 can be any embodiment of transmitting line provided in an embodiment of the present invention, receive circuit
400 can be any embodiment provided in an embodiment of the present invention for receiving circuit.Related content refers to the tool of above embodiments
Body description, which is not described herein again.The serial signal transmission system of the embodiment of the present invention can be SerDes circuit or LVDS electricity
Road.
Figure 15 is please referred to, the embodiment of the invention also provides a kind of embodiments of the method for sending method.The present embodiment is used for
Transmitting line.The embodiment of the present invention method includes:
1501: the transmitting line carries out the direct current square-wave signal to generate the AC signal along information extraction.
1502: the transmitting line exports the AC signal to the transmission line.
The transmitting line in the present embodiment can be any implementation of transmitting line 100 provided in an embodiment of the present invention
Example.Related content refers to the specific descriptions of above embodiments, and which is not described herein again.
Figure 16 is please referred to, the embodiment of the invention also provides a kind of embodiments of the method for method of reseptance.The present embodiment is used for
It receives in circuit.The embodiment of the present invention method of reseptance includes:
1601: the reception circuit is detected from the AC signal that the transmission line exports along information.
1602: the AC signal is reverted to direct current square-wave signal along information according to described by the reception circuit.
The reception circuit in the present embodiment can be any implementation provided in an embodiment of the present invention for receiving circuit 400
Example.Related content refers to the specific descriptions of above embodiments, and which is not described herein again.
Description and claims of this specification and term " first ", " second ", " third " or " in above-mentioned attached drawing
Four " etc. be to be used to distinguish similar objects, rather than describe specific sequence or precedence.It should be understood that use in this way
Data are interchangeable under appropriate circumstances, so that the embodiments described herein can be in addition to the content for illustrating or describing herein
Sequence in addition is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover non-exclusive
Include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to be clearly listed
Those of step or unit, but may include be not clearly listed or it is intrinsic for these process, methods, product or equipment
Other step or units.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (22)
1. a kind of transmitting line for serial signal transmission system, which is characterized in that the input terminal of the transmitting line with simultaneously
The output end electrical connection of string conversion circuit, the output end of the transmitting line are electrically connected with transmission line, and the transmitting line includes:
It takes along circuit, the input terminal electrical connection for taking input terminal and the transmitting line along circuit is described to take along circuit
Output end is electrically connected with the output end of transmitting line.
2. transmitting line as described in claim 1, which is characterized in that the transmitting line further includes taking with described along circuit string
The driving circuit of connection, in which:
It is described that the input terminal along circuit is taken to be electrically connected with the input terminal of the transmitting line, the output end of the driving circuit and institute
State the output end electrical connection of transmitting line.
3. transmitting line as claimed in claim 2, which is characterized in that the transmitting line further includes single-ended transfer difference circuit,
The input terminal of the single-ended transfer difference circuit is electrically connected with the input terminal of the transmitting line, the single-ended transfer difference circuit it is defeated
Outlet takes the input terminal along circuit to be electrically connected with described.
4. transmitting line as described in claim 1, which is characterized in that the transmitting line further includes taking with described along circuit string
The driving circuit of connection, in which:
The input terminal of the driving circuit is electrically connected with the input terminal of the transmitting line, the output end taken along circuit and institute
State the output end electrical connection of transmitting line.
5. transmitting line as claimed in claim 4, which is characterized in that the transmitting line further includes single-ended transfer difference circuit,
The input terminal of the single-ended transfer difference circuit is electrically connected with the input terminal of the transmitting line, the single-ended transfer difference circuit it is defeated
Outlet is electrically connected with the input terminal of the driving circuit.
6. such as transmitting line described in any one of claim 1 to 5, which is characterized in that described take along circuit includes at least one
Capacitor or direct current deliver current circuit.
7. such as transmitting line as claimed in any one of claims 1 to 6, which is characterized in that described take is used for along circuit to the hair
The received direct current square-wave signal in power transmission road is carried out along information extraction, to generate AC signal and export the AC signal, wherein
The AC signal includes direct current square-wave signal along information, and the direct current square-wave signal and the AC signal are serial letter
Number.
8. transmitting line as claimed in claim 7, which is characterized in that the wave crest of the AC signal corresponds to the direct current square wave
The rising edge of signal, the trough of the AC signal correspond to the failing edge of the direct current square-wave signal；Alternatively,
The wave crest of the AC signal corresponds to the failing edge of the direct current square-wave signal, described in the trough of the AC signal is corresponding
The rising edge of direct current square-wave signal.
9. transmitting line as claimed in any one of claims 1 to 8, which is characterized in that the driving circuit is used for received
Signal carries out power amplification, and the signal after power amplification is exported.
10. a kind of transmitter for serial signal transmission system, which is characterized in that including parallel-to-serial converter and such as right
It is required that transmitting line described in 1 to 9 any one, in which:
The parallel-to-serial converter is used to be converted to parallel signal serial signal, and serial signal is exported to the transmission electricity
The input terminal on road.
11. a kind of reception circuit for serial signal transmission system, which is characterized in that the input terminal and biography for receiving circuit
Defeated line electrical connection, the output end for receiving circuit are electrically connected with serial-parallel conversion circuit, and the reception circuit includes restoring circuit
Front end, the restoring circuit front end include:
Concatenated amplifying circuit and latch cicuit, in which:
The input terminal of the amplifying circuit is electrically connected with the input terminal for receiving circuit, the output end of the latch cicuit and institute
State the output end electrical connection for receiving circuit.
12. receiving circuit as claimed in claim 11, which is characterized in that the restoring circuit front end is used for from the transmission line
The AC signal is reverted to direct current square-wave signal along information according to described along information by detection in the AC signal of output.
13. the reception circuit as described in claim 11 or 12, which is characterized in that the reception circuit further includes common mode adjustment electricity
Road, in which:
The level value for the AC signal that the common mode adjustment circuit is used to export the transmission line is adjusted, and will be adjusted
AC signal after whole is exported to the restoring circuit front end, wherein the level value of the AC signal adjusted is positioned at described
Within the scope of the level detection of restoring circuit front end.
14. receiving circuit as claimed in claim 13, which is characterized in that the reception circuit further includes at least one blocking electricity
Hold, at least one described capacitance is electric with the input terminal of the input terminal for receiving circuit and the common mode adjustment circuit respectively
Connection.
15. such as the described in any item reception circuits of claim 11 to 14, which is characterized in that the wave crest of the AC signal is corresponding
The rising edge of the direct current square-wave signal, the trough of the AC signal correspond to the failing edge of the direct current square-wave signal；Alternatively,
The wave crest of the AC signal corresponds to the failing edge of the direct current square-wave signal, described in the trough of the AC signal is corresponding
The rising edge of direct current square-wave signal.
16. a kind of reception circuit for serial signal transmission system, which is characterized in that the input terminal and biography for receiving circuit
Defeated line electrical connection, the output end for receiving circuit are electrically connected with serial-parallel conversion circuit, and the reception circuit includes restoring circuit
Front end, the restoring circuit front end include:
Comparison circuit generates direct current square-wave signal for being compared to the received AC signal of the reception circuit.
17. receiving circuit as claimed in claim 16, which is characterized in that the restoring circuit front end is used for from the transmission line
The AC signal is reverted to direct current square-wave signal along information according to described along information by detection in the AC signal of output.
18. the reception circuit as described in claim 16 or 17, which is characterized in that the reception circuit further includes common mode adjustment electricity
Road, in which:
The level value for the AC signal that the common mode adjustment circuit is used to export the transmission line is adjusted, and will be adjusted
AC signal after whole is exported to the restoring circuit front end, wherein the level value of the AC signal adjusted is positioned at described
Within the scope of the level detection of restoring circuit front end.
19. receiving circuit as claimed in claim 18, which is characterized in that the reception circuit further includes at least one blocking electricity
Hold, at least one described capacitance is electric with the input terminal of the input terminal for receiving circuit and the common mode adjustment circuit respectively
Connection.
20. such as the described in any item reception circuits of claim 16 to 19, which is characterized in that the wave crest of the AC signal is corresponding
The rising edge of the direct current square-wave signal, the trough of the AC signal correspond to the failing edge of the direct current square-wave signal；Alternatively,
The wave crest of the AC signal corresponds to the failing edge of the direct current square-wave signal, described in the trough of the AC signal is corresponding
The rising edge of direct current square-wave signal.
21. a kind of receiver for serial signal transmission system, which is characterized in that including serial-parallel conversion circuit and receive electricity
Road, the reception circuit are such as the described in any item reception circuits of claim 11 to 15 or as claim 16 to 20 is any
Reception circuit described in；
The serial-parallel conversion circuit is used to carry out the direct current square-wave signal for receiving circuit output serial-to-parallel
Conversion generates parallel signal.
22. a kind of serial signal transmission system, which is characterized in that the serial signal transmission system includes such as claim 1 to 9
Described in any item transmitting lines, and such as the described in any item reception circuits of claim 11 to 15 or such as claim 16
To 20 described in any item reception circuits, the transmitting line and the reception circuit by way of exchanging AC coupled signal into
The transmission of row signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410823.4A CN110297788B (en) | 2016-07-21 | 2016-07-21 | Transmitting circuit, receiving circuit and serial signal transmission system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410823.4A CN110297788B (en) | 2016-07-21 | 2016-07-21 | Transmitting circuit, receiving circuit and serial signal transmission system |
| CN201610580593.2A CN106301468B (en) | 2016-07-21 | 2016-07-21 | Serial signal transmitting line receives circuit and Transmission system and method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610580593.2A Division CN106301468B (en) | 2016-07-21 | 2016-07-21 | Serial signal transmitting line receives circuit and Transmission system and method |
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| CN110297788B CN110297788B (en) | 2024-03-01 |
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| CN201910410823.4A Active CN110297788B (en) | 2016-07-21 | 2016-07-21 | Transmitting circuit, receiving circuit and serial signal transmission system |
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| CN108900949B (en) * | 2018-05-04 | 2020-11-24 | 建荣半导体（深圳）有限公司 | Main control chip of automobile data recorder and load type identification method thereof |
| CN111913170B (en) * | 2020-08-12 | 2023-08-08 | 南京英锐创电子科技有限公司 | Signal transmitting device |
| CN113759920A (en) * | 2021-09-10 | 2021-12-07 | 南京苏美达智能技术有限公司 | Automatic walking equipment, base station and boundary line signal interaction method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106301468A (en) | 2017-01-04 |
| CN110297788B (en) | 2024-03-01 |
| CN106301468B (en) | 2019-05-28 |
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